Remove unused Go dependencies

Author: joeig

go.mod

@@ -2,26 +2,4 @@ module github.com/joeig/go-powerdns
 
 go 1.13
 
-require (
-	github.com/bombsimon/wsl v1.2.8 // indirect
-	github.com/go-critic/go-critic v0.4.0 // indirect
-	github.com/gogo/protobuf v1.3.1 // indirect
-	github.com/golangci/gocyclo v0.0.0-20180528144436-0a533e8fa43d // indirect
-	github.com/golangci/golangci-lint v1.21.0 // indirect
-	github.com/golangci/revgrep v0.0.0-20180812185044-276a5c0a1039 // indirect
-	github.com/gostaticanalysis/analysisutil v0.0.3 // indirect
-	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
-	github.com/mattn/go-isatty v0.0.11 // indirect
-	github.com/pelletier/go-toml v1.6.0 // indirect
-	github.com/securego/gosec v0.0.0-20191219224501-5d613739e150 // indirect
-	github.com/spf13/afero v1.2.2 // indirect
-	github.com/spf13/cast v1.3.1 // indirect
-	github.com/spf13/jwalterweatherman v1.1.0 // indirect
-	github.com/spf13/viper v1.6.1 // indirect
-	github.com/uudashr/gocognit v1.0.1 // indirect
-	golang.org/x/sys v0.0.0-20191220220014-0732a990476f // indirect
-	golang.org/x/tools v0.0.0-20191220234730-f13409bbebaf // indirect
-	gopkg.in/jarcoal/httpmock.v1 v1.0.0-20180719183105-8007e27cdb32
-	mvdan.cc/unparam v0.0.0-20191111180625-960b1ec0f2c2 // indirect
-	sourcegraph.com/sqs/pbtypes v1.0.0 // indirect
-)
+require gopkg.in/jarcoal/httpmock.v1 v1.0.0-20180719183105-8007e27cdb32